I finished building my 222-28 transverter and decided to test the Rx
using the XG3 on 222.200 MHz. I am not seeing a very strong signal
(had to use the -73 dBm level) so questioning if my transceiver
sensitivity is off.
I understand that the output of the XG3 is calibrated up to 200-MHz
and
It largely depends on your skill level and organization skills. I had mine up
and running in under five hours with regard to actual assembly and calibration
time. Parts inventory, layout and reading the assembly manual took an
additional two hours. So, eight hours is a reasonable estimate
Hi all, I have had my K3 since mid August 2010. Bought it as a kit fully
optioned with 2nd Rx,gen coverage BPFand a set of 8 pole filters for main
2nd Rx.
Since I have had it in use (mainly 160M) it has performed almost flawlessly;
with one exception!
When I engage the SUB Rx on our early
Hi all, I have had my K3 since mid August 2010. Bought it as a kit fully
optioned with 2nd Rx,gen coverage BPFand a set of 8 pole filters for main
2nd Rx.
Since I have had it in use (mainly 160M) it has performed almost flawlessly;
with one exception!
When I engage the SUB Rx on our early
Hmmm - interesting comments. I use a microHam DigiKeyer and the gold plugs on
that fit very well - again a product from an European country using metric
only. And I use a Heil Proset-K2 (purchased with the K3) which also fits well
and never had any problems.
Having said that, I've never had
Send Jerry a note - QRZ email is good. I think it will take the power and
keep the isolation. Jerry is a retired engineer and a good designer.
73
Dan
-
Dan AB3EN
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Sent from
I am the 2nd owner of my K2 and have so far largely ignored the DSP filter
but I thought I'd look into it further following my poor performance in a
recent RTTY contest where some contacts were difficult but eventually OK and
others were unable to decode my signals at all.
So far I have found the
According to Google converter, 3.5mm = 0.137795276** inch. Rounding would make
it
0.138 . RS's meterstick is uncalibrated. :-)
73, Mike NF4L
On 1/2/2012 11:17 PM, Ron D'Eau Claire wrote:
Part of the problem is that in the USA many suppliers consider 3.5 mm and
1/8 the same. For example I
Will the software allow us to program the memories (for instance).
Backup the configuration and save various setups to be changed as needed
like the programming software for the 817?
I am very interested in using this as an SDR with controls as someone
(I think Wayne) said in a Dayton video.
On CW I've just found that toggling the RCL button shows the following
settings:
C.1 LPA.SS
C.2 .60 .80
C.3 .60 .30
C.4 .60 .10
73
Ray, G3XLG
-
Ray G3XLG
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View this message in context:
Jim Brown-10 wrote
Diversity is most useful for weak signal reception, where narrower
filters are likely to be used.
Yes, diversity is an important tool for weak cw signal reception but it's
also very useful/enjoyable to use regularly on ssb and a pair of 2.7Khz
filters would work just
Well here's one for you:
My setup is K3 to wattmeter to dummy load.
The K3 says 100w
If the external wattmeter is:
MFJ 949E tuner/SWR meter (tuner out of circuit) it says 100w
cheapo Radio Shack SWR meter 100w
LP 100A digital wattmeter says 70 watts
Elecraft W2 says 70 watts
Yes, I have run the
Buck,
You are like the man with 2 (or more) watches who never knew what time
it was!
Was your LP-100A calibrated to NIST traceable standards (Larry's
calibration tools)?
If the answer is yes, I would use the LP-100A as the standard to
calibrate the K3 wattmeter (see instructions in the
In th UK, once the home of imperial hi, 0.001 of an inch is refered to as a
thou (pronounced thowe) meaning thousanth of an inch
The 50 mil had me scratching my head? (5cm)
Regards Darren g0ott
__
Hi,
I have just measured a 3.5 mm jack at 3.46 mm and 0.136 inches, making it 11
thousandths larger than 1/8 of an inch. Probably makes a better fit that a
nominal 1/8 inch plug (about 10% smaller). Mine are 3.5 mm and cause no
bother.
73
Tim
gm4lmh
Just curious if anyone has discovered a passive external speaker more efficient
than the internal stock speaker with a deflector for CW and side tone use? I
have not.
Mike/AC5P
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Hi Ray,
I'm not an expert on the DSP, but my K2 has one and I'm happy with it.
To answer your questions:
1. The CW filters, like the SSB and RTTY filters are activated by using
the AFIL button on the front panel. nr = noise reduction I think the
DSP filter comes already configured,
I don't know why C.1 would say LPA.SS. It sounds like something hasn't
been set correctly. The other settings look OK. .60 means the filter
is centered on 600 Hz and the number to the right is the width of the
filter in kHz, where .80 would be 800 Hz and .10 would be 100 Hz (for
contests,
First whack at at it:
Assumptions: signal: 1.860 MHz; local osc: 1.860 + 8.215 = 10.075 MHz
In 6 weeks, there are about 36.56016E12 local oscillator cycles, for the
top-band frequency given.
Each cycle takes the reciprocal of 36.56016E12 in time.
Think of the local osc signal as a Slinky on
No theirs, mine. I simply measured a plug I had on hand and came up with
0.135. As Don noted earlier, there are always tolerances.
73, Ron AC7AC
-Original Message-
According to Google converter, 3.5mm = 0.137795276** inch. Rounding would
make it
0.138 . RS's meterstick is
In my life-time career as a Toolmaker/Mfg Eng., a millionth or a mil was
a thousandth (.001) divided by 10 or:
.001/10 = .0001 (what we called a mil or a tenth)
I worked with those so called mils and sometimes even splitting them!
I'm not clear what is meant by the term 50 mils.
73 Dwight
You will be surprised at the separation that diversity gets for noise
sources and voice. The human brain (doing all the work in true diversity)
is an amazing thing. If you can hold a conversation in a loud cafeteria
(remember high school?) your brain knows what to do. The second full
capability
Steve,
Installing a buffer amp such as the Clifton Labs Z1 - K2 is the
cleanest solution, but there is an alternative if you are just playing :-)
Depending on the level of the natural noise floor of your Spectrum Analyzer
and the interconnecting coax's capacitance, the IF signal at the
A common mistake when installing filters is to count left to right, looking
at the filter locations on the pc board, instead of right to left. With the
front edge of either the K3 RF board or the KRX3 board toward you, Filter #1
goes on the right end. Filter #5 is on the left.
Ron AC7AC
The speakers Elecraft uses are very efficient. It's hard to beat them. The
issue of the upward facing speaker was a big topic back when the K2/10 was
first being shipped (ca 2000). Many people simply built a deflector that sat
right on top of the rig over the speaker opening. Curious, I made one
I'm obviously not smoking the same stuff.
Regards,
Mike VP8NO
On 03/01/2012 13:39, David Windisch wrote:
First whack at at it:
Assumptions: signal: 1.860 MHz; local osc: 1.860 + 8.215 = 10.075 MHz
In 6 weeks, there are about 36.56016E12 local oscillator cycles, for the
top-band
Heh heh. So, what -are- you smoking, Mike?
- Original Message -
From: Mike Harris [via Elecraft]
To: David Windisch
Sent: Tuesday, January 03, 2012 12:11 PM
Subject: Re: K3. S/No:4250
I'm obviously not smoking the same stuff.
Regards,
Mike VP8NO
On 03/01/2012
Milliradians
One mil at a thousand yards is one yard of deflection (azimuth)
Naval gunfire support...
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On 1/2/2012 8:17 PM, Ron D'Eau Claire wrote:
I grabbed one and checked it, and it's 0.135 in diameter - 3.5 mm. No
wonder it works FB in my K3.
The REAL manufacturers of audio products are members of international
Standards bodies, like the Audio Engineering Society, and carefully
adhere to
Good morning everyone, I first want to thank everyone who responded to my
e-mail on how long it takes to assemble a K3. You were all very helpful. My
K3/100 kit just arrived. It's serial number 6131. I just spent the past hour
going over the assembly manual. Everything looks straight forward.
Since the output is a square wave, I assume they are using only odd
harmonics. Probably the fundamental is 222.2 / 3 = 74.07 MHz.
Theoretically, the harmonics are inversely proportional to the harmonic
number. So the third harmonic should be 20 * log (1/3) = -9.54 dB.
However it might be weaker
On 1/2/2012 8:23 PM, Richard Fjeld wrote:
It is simply a 12V incandescent bulb. Apparently the small metal box in-line
on the power cord is a switching PS instead of a step-down transformer.
YES. This is a VERY common noise source, and finding a step-down
transformer for products like this
On 1/2/2012 8:24 PM, Ken G Kopp wrote:
Are there plugs commonly available in the US that -do-
fit properly?
Hi Ken,
See the Ham Interfacing or RFI documents on my website. Both list high
quality parts made by Switchcraft and Neutrik that do, as well as a good
vendor that sells via the
Check out the older surplus Motorola Micor speakers - HSN4032 and
similar. Not the powered ones with a 15 watt amplifier inside! Most
efficient speakers I have found. Usually available at hamfest and
fleamarkets for less than $10.00. I have two wired in parallel for
quasi-surround sound with
I could infer from this discussion that 3.5 mm and 1/8 inch are two
different types of connector but I find no evidence of that.
The terms are used interchangeably by manufacturers. Switchcraft, for
instance, titles their products as 3.5 mm but goes on to say all products
are 1/8 inch. On their
There's probably a very good chance that we'll be implementing keyboard
macros on the P3SVGA Keyboard Interface. Either function keys or some other
keystroke combination is my guess.
73,
Paul (n6hz)
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We have recently updated our website so Japan customers can now order
directly form the Elecraft web page at
http://www.elecraft.com/elecraft_prod_list.htm
In addition to ordering direct from Elecraft via this web order page,
all customers outside the U.S. may also order Elecraft products
Generally, connectors described as 3.5 mm and 1/8 are fully
compatible. Most manufacturers use the metric notation. 1/8 is more
of a historical reference at this point, though we sometimes use
either term in existing manuals. New manuals will all use 3.5 mm.
If in doubt, use connectors
Boy was I confused! I just saw the topic was LEDs, glanced at Wayne's
response (50 mils), and assumed he was referring to current consumption.
73
Dave KQ3T
On 1/3/2012 11:52 AM, DGB wrote:
In my life-time career as a Toolmaker/Mfg Eng., a millionth or a mil was
a thousandth (.001) divided
Thank you, Ron (AC7AC). The Radio Shack P/N 274-284 plug does indeed fit
the STEREO/MONO jack on the back of the K3. The Radio Shack package shows
it as a 1/8 Stereo Phone Plug. Nevertheless, it fits the K3 jack without
wiggling around. I find it very hard to eyeball the difference between
I was just reviewing the power output on my KX1 on various bands and came up
with the following results:
BandInt BattExt BatExt w/Tuner Ext Bat on 40M Doublet
13.8 Volts
20 1.0 3.0 3.0 4.3 3.9
30 1.4 3.9 3.7 1.7 4.6
40 1.5
Test
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Something I've never noticed before with my KX1 - when an external battery is
hooked up, i hear a brief audio blip or beep every 2.5 seconds. I don't
recall hearing this before, the only change I've made is putting in lithium
internal batteries. Haven't tried pulling them out yet.
Any thoughts?
The KX3 will ship with the KXUSB interface cable (USB) unless the buyer
specifies the KXSER (RS232) cable instead.
It has been stated that a module will be developed that will allow the KX3
to work to the P3.
In a fully integrated K3/P3 set, the P3 daisy-chains on the RS232 interface
to the host
Anybody have input on charging the KX3 KXBT3/battery pack with a 12 V. PV
panel?
Mike WB6CLZ
51 Yr Old Woman Looks 25
Mom Publishes Free Wrinkle Secret That Has Angered Doctors!
Hi David
I agree you are quite correct; what is concerning me
is that if Both Rx synthesisers are controlled by the TCXO why am I
seeing this shift?
I will be the first to acknowledge that I have done -or- am doing
something wrong in the operation / use of my rig;
at the
There will be a certain minimum voltage requirement for this. We'll
include this info in the manual.
73,
Wayne
N6KR
On Jan 3, 2012, at 2:14 PM, bodel...@juno.com wrote:
Anybody have input on charging the KX3 KXBT3/battery pack with a 12
V. PV panel?
Mike WB6CLZ
The only difference is in the diameter of the plug shaft, but the shape of
the tip contact may have an influence as well.
It looks like the industry tried to make a compromise plug to fit both 1/8
and 3.5mm jacks. After all, they are only about 0.01 different. However,
that assumes that the
While we are on the subject, I am interested in learning what the maximum
current
drain is for the KX3. Does anyone know what size power supply is required? I
can't
seem to find those specs on the website. I assume a 25w power supply would be
adequate for the stated maxiumum 12w output,
On Tue, Jan 3, 2012 at 4:33 PM, Ron D'Eau Claire r...@cobi.biz wrote:
...After all, they are only about 0.01 different
=
That's 10 mils, right?
KT0NY
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I would also expect a certain MAXIMUM voltage spec as well. Most 12V solar
panels have an open circuit voltage in the 18-20V range. Some kind of
limiter (e.g. zener) would be wise.
73,
Bruce, N1RX
There will be a certain minimum voltage requirement for this. We'll
include this info in the
Jim,
I would not be concerned with those power output levels.
The difference between the power displayed by the KX1 and the W1 when
using an antenna is due to significant SWR on the antenna feedline.
Instruments placed at different places along the feedline will produce
different readings -
Jim,
Since it only happens with the external battery, suspect the battery - a
battery with significant internal resistance can do that (with any
radio). I suspect that battery is about to have a short lifetime left.
There is also a remote possibility of leaky capacitors in the KX1, but
that
The solar panned have to go to the charge controller that regulates it to
12 v in my case my solar setup has 12v at 14 amps that os used to charge my
battery bank. I would just hook up to the battery bank and let it charge
from there. Or for field use get a small portable one that rolls up that
Fantastic - great thinking by you guys, as ever. Looking forward to playing :-)
73 de M0XDF (K3 #174, P3 #108)
On 3 Jan 2012, at 19:31, Paul Saffren N6HZ wrote:
There's probably a very good chance that we'll be implementing keyboard
macros on the P3SVGA Keyboard Interface. Either function
I'll follow up on my own note because there's nothing as helpful as an
example:
1) I move to 17m band with P3 set for +/-100 kHz span
2) P3 REF LVL knob used to set -122 dBm to match noise level at my QTH
3) -122 dBm = 6.30957 x 10^-13 mW
4) Since noise power N = kTB, (k is
Hi, Eric:
What was I thinking?! grin I did this same thing to myself a few years
back by messing the offsets up in some bit of experimentation I was doing.
Forgot all about it, of course. The fix for my situation then was found in
the K3 manual.
Here is a quote from p38 of the online K3 Manual:
Dear Group;
As I use my beloved K2 - and keep adding options - I wonder...
Since it is a kit, and one I did not build, how can I be sure it is giving the
best performance in terms of sensitivity? Is there an easy way to determine if
it is giving its all?
I know a test lab would work, which
Jacob - there are a couple references on the net to K2 calibration
procedures - I think tom/N0SS's site had one; there are possibly others.
If you follow the steps, you can dial in your K2 very nicely. I do this
once every couple years but I think it's worth it to know that the K2 is
tuned up
Jacob,
Short of testing, there is not much I can say to answer your questions.
You can just trust, or you can obtain instruments to measure.
I would suggest that you obtain a low level signal generator such as the
Elecraft XG3 or XG2 to make MDS measurements (using the techniques and
Don is quite right - a small investment in an XG2 or, if the pocket book
allows an XG3 will provide you with numbers. But numbers are only part of
the picture.
If your noise level jumps up when you connect the antenna, using the minimum
bandwidth your might choose, the K2 is as sensitive as it
My understanding is it is a no-solder modular kit, like the K3 just a smaller
box. I would imagine there will be some hardware to work with (knobs, face
plate cover, buttons) in addition to fitting the boards (if there's more
than one) inside the case and closing it up.
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The P3 already does this if you have MENU:SpanScale set to anything
other than OFF.
Alan N1AL
On Tue, 2012-01-03 at 19:52 -0500, Mike Markowski wrote:
I'll follow up on my own note because there's nothing as helpful as an
example:
1) I move to 17m band with P3 set for +/-100 kHz span
Glad to see the KX3 on the order page! When should we expect to see the entire
accessory suite listed for order? Specifically, the 100w option... Thanks.
Patiently waiting and trying to avoid getting an alternative mobile option...
Scott-KI6WPJ
Proud owner of K3 #4117 a P3
~Scott~
1 mm = 1 millimeter = 1000th of a meter
1 mA = 1 milliampere = 1000th of an Ampere
1 mW = 1 milliwatt = 1000th of a Watt
1 mT = 1 millitesla = 1000th of a Tesla
1 mil (shorthand) = 1 milli-inch = 1000th of an inch
This mil has nothing to do with million
73,
Bud Morin, K9ZT
Original
And it probably has its origin in Latin. I do know that one thousand in
the Spanish language is un mil when speaking of quantities. However, it
is Kilo when speaking of weights and measures. Strange.
de Milt, N5IA
-Original Message-
From: Bud Morin
Sent: Tuesday, January 03, 2012
Kilo is 10^3 or 1000 while milli is 10^ -3 or 0.001 That is the
difference
73, Igor UA9CDC
- Original Message -
From: Milt -- N5IA n...@zia-connection.com
To: Bud Morin dcmo...@wisc.edu; Elecraft Discussion Group
elecraft@mailman.qth.net
Sent: Wednesday, January 04, 2012 12:06 PM
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